Fastener for receptacle-covers.



A. DREWITZ. FASTENER FOR RECEPTACLE CGVERS.

APPLICATION FILED IIIAY I6. ISIS.

Patented Oct. 2, 1917.

UNITED STATES PATENT OFFICEf ALBERT DRENVITZ,` OF SYRACUSE, NEW YORK.

'FAsTENnR non REcEP'rAcLE-covnns.

Application filed May 16, 1916.

` To all whom t may com am.'

Be it known that I, ALBERT Dnnwrrz, a citizen oi' the United States, residing at Syracuse, in the county of Onondaga and `State of New York, have invented certain useful Improvements in Fasteners for Receptacle-Covers, ot which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in receptacle closures, one objectl of the invention being the provision of a closure and locking device therefor, which is bodily removable with the closure and which will automatically adjust itself to secure the closure in position as a locking screw is actuated.

A further object of this invention is the provision of a. device of this character in which radially slidable arms are employed to grip the periphery of the can or receptacle and also the periphery of the closure and coperate with a single screw operated means and a projection upon the closure to firmly grip and hold the closure upon the receptacle.

A still further object of this invention is the provision of a device of this character which is simple, durable and inexpensive in construction, and which is thoroughly eilicient and practical in use.

In the accompanying drawings Figure l is a side elevation of a receptacle provided with the present closure.

Fig. 2 is a top plan view thereof.

Fig. 3 is a cross section taken on line 3-3 of Fig. 2 with the arms in the position they' assume previous to being actuated upon and act as clamps.

Fig. 4 is a similar view showing the arms clamped.

Referring to the drawings, the numeral 5 designates the receptacle which may be of any ware or material desired, and having `adjacent to the mouth thereof the outstanding liange or rim 6. i

The cover or closure 7 for the receptacle 1s made in the form of a diskhavmg a rim 8 Specification of Letters Patent.

Patented Oct. 2, 1917.

Serial No. 97,842.

between which latter and the rim 6 is received the gasket 9. l i

Carried by the cover centrally thereof is a screw 10 having the short cylindrical sleeve 11 thereabout, a coil spring 12 being mounted upon said sleeve and normally exerting an outward tension.

Mounted 'for sliding movement upon the screw are the two concavo-convex disks 13 and 14. the disk 14 being provided with the radial slots 15 for the reception of the lugs or pins 16 carried by the radially movable clamping arms or levers 17.

Each of these arms is provided with the hooked terminal 18 for projection beyond the periphery ot' the liange 6 and the cover or closure 7, while carried by the screw beyond the outer disk 14 is a thumb nut 20. Thus the spring normally holdsthe disks outwardly while the thumb nut operates in opposition to the spring to press the inner ends of the clamping bars downwardly so the intermediate portion thereof will bear upon the annular projection 21 carried by the closure and thus force the hooked terminals upwardly exerting pressure upon the underside of the flange 6, while pressure is exerted upon the closure by the action of the arms upon the annular projection.

From the foregoing description, it is evident that the clamping arms may be readily ladjusted and'with their hooked ends discentral thumb nut is released, so that thescrew can be pushed downwardly, thereby admitting air to the receptacle so that the cover can be lifted without any appreciable effort.

A fastener adapted to be used with a receptacle having an outstanding flange at formed on the outer ends of the levers and embracing the periphery of the Harige and closure7 a fulcruming member for each lever carried by the closure, and a thumb nut mounted upon said screw for compressing the disks and the inner ends of said levers.

In testimony whereof affix my signature.

` ALBERT DREWITZ.

the top thereof and a closure Ahaving va gasket retainingarm tted on the flange including a screw carried eoncentrically of the closure, two concavo-oonveX clamping disks mounted upon the screw, a spring for normally holding the disks outwardly, a plurality yof levers having their. inner ends slidably conneeted between the disks, hooks Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

